Q1B340 - 40 Amp Circuit Breaker

Q1B340 - 40 Amp Circuit Breaker

If you're looking for a reliable circuit breaker that won’t let you down, the Q1B340 is a solid choice. This 3-pole, 40-amp breaker is built to handle the demands of commercial and industrial electrical systems. With a 10,000 AIC rating at 240 volts, it’s designed to interrupt high fault currents quickly and safely—helping you protect your equipment, your team, and your peace of mind. Its bolt-on design makes for a tight, secure fit in your panel, and its compact size means it won’t hog valuable space.

Whether you're replacing a breaker or setting up a new panel, the Q1B340 keeps your electrical system running smoothly without the guesswork.

Key Features and Benefits

• Dual Protection (Thermal & Magnetic): Triggers fast on short circuits and holds steady through minor overloads. You get smart, responsive protection that adjusts to real-world conditions.
• High Fault Tolerance: With a 10kA interrupt rating, it’s built for tough environments where surges and heavy loads are part of the job.
• Secure Bolt-On Mounting: No wobble or loose connections—just a snug, durable fit every time.
• Space-Saving Design: Takes up just six spaces in your panel, making it ideal for tight electrical rooms or compact installations.
• Reliable Performance: It’s part of the trusted Q1B series, known for long-lasting, consistent operation.

Technical Specifications

• Amperage: 40 Amps
• Poles: 3
• Voltage: 240V AC
• Interrupt Rating: 10,000 AIC
• Trip Type: Thermal-Magnetic
• Mounting: Bolt-On
• Panel Space Required: 6 Spaces
• Dimensions:
  • Width: 2.25 inches
  • Length: 6.38 inches
  • Depth: 2.31 inches
• Weight: Approx. 5 lbs

Material Compliance and Certifications

• UL Listed: Meets rigorous safety standards, so you can install it with confidence.
• RoHS Compliant: Built without harmful substances for a safer, cleaner installation.
• Factory Tested: Every unit is tested before it ships out to ensure it performs as expected.

Where It Works Best

• The Q1B340 is a go-to breaker for commercial buildings, industrial setups, and any high-demand three-phase electrical system. Electricians and facility managers trust it for jobs where safety and uptime are non-negotiable—like HVAC units, motor loads, machinery, or power distribution panels.